Protect your home inside and out with the XFORT door and window blocker with key. These security locks act like smart stoppers / restrictors and can be fitted on both uPVC doors and windows that open in or out. A low-cost home security solution, this door jammer prevents the levering of the window sash or door leaf. For inside safety, the window and door lock help protect children from unlocking a door or window themselves. They also ensure that no one will be able to accidentally unlock the door or window from the inside. The window lock also provides resistance against forced entry, so intruders cannot gain access into your home. Available in a white finish, this sash jammer for uPVC doors and double-glazed windows will blend effortlessly with your outdoor façade or internal décor. It comes with both 1mm and 2mm packers to ensure a secure fit and easy installation.